Debutants
Takahiro Koyama is the youngest debutant in Tour de Hokkaido in 2015. There are 22 debutants.
| # | Rider | Team | Age |
|---|---|---|---|
| 1 | KOYAMA Takahiro | Shimano Racing Team | 18y + 287d |
| 2 | YOKOYAMA Kota | Shimano Racing Team | 20y + 22d |
| 3 | ARASHIRO Yudai | Nasu Blasen | 20y + 70d |
| 4 | CHUANG Wen Yen | RTS-Santic Racing Team | 20y + 269d |
| 5 | KISHI Takahito | Gunma GRIFIN Racing Team | 21y + 186d |
| 6 | ZENOVICH Matthew | CCT p/b Champion System | 21y + 197d |
| 7 | VERSCHUERE Seppe | CCT p/b Champion System | 21y + 248d |
| 8 | SUZUKI Ryu | Nasu Blasen | 22y + 347d |
| 9 | BERLATO Giacomo | Nippo - Vini Fantini | 23y + 218d |
| 10 | FILOSI Iuri | Nippo - Vini Fantini | 23y + 237d |
| 11 | VINK Michael | CCT p/b Champion System | 23y + 293d |
| 12 | AKIMARU Yuya | Shimano Racing Team | 24y + 102d |
| 13 | TSUBAKI Hiroshi | Bridgestone Anchor Cycling Team | 24y + 116d |
| 14 | MULHERN Mitchell | Team Budget Forklifts | 24y + 232d |
| 15 | HIRAI Eiichi | Team UKYO | 24y + 297d |
| 16 | HUANG Wen Chung | RTS-Santic Racing Team | 24y + 356d |
| 17 | DESRIAC Loïc | Kinan Cycling Team | 26y + 52d |
| 18 | SUNDERLAND Scott | Team Budget Forklifts | 27y + 179d |
| 19 | WITMITZ Sam | Team Budget Forklifts | 30y + 178d |
| 20 | COLLI Daniele | Nippo - Vini Fantini | 33y + 145d |
| 21 | URTASUN Pablo | Team UKYO | 35y + 166d |
| 22 | SUGA Yosuke | Gunma GRIFIN Racing Team | 35y + 197d |